Fix js exception and broken link in report html

[treeskar]

JS Exception fix - happened when I am running istanbul report --include "coverage/**/*.json" on coverage.json report that I got from protractor-istanbul-plugin

/usr/local/lib/node_modules/istanbul/lib/report/html.js:239
                endCol = structuredText[startLine].text.originalLength();
                                                  ^

TypeError: Cannot read property 'text' of undefined
    at /usr/local/lib/node_modules/istanbul/lib/report/html.js:239:51
    at Array.forEach (native)
    at annotateFunctions (/usr/local/lib/node_modules/istanbul/lib/report/html.js:224:26)
    at HtmlReport.writeDetailPage (/usr/local/lib/node_modules/istanbul/lib/report/html.js:427:9)
    at /usr/local/lib/node_modules/istanbul/lib/report/html.js:489:26
    at AsyncFileWriter.processFile (/usr/local/lib/node_modules/istanbul/lib/util/file-writer.js:93:9)
    at /usr/local/lib/node_modules/istanbul/node_modules/async/lib/async.js:987:13
    at Immediate.process (/usr/local/lib/node_modules/istanbul/node_modules/async/lib/async.js:953:21)
    at runCallback (timers.js:637:20)
    at tryOnImmediate (timers.js:610:5)

In html report, in "File" cell link is broken if folder's/file's name has character that needs URI encoding
For example: src/app/+main/+dashboard/

[coveralls]

Coverage remained the same at 97.523% when pulling 9a8f278 on treeskar:master into 89e338f on gotwarlost:master.

[coveralls]

Coverage decreased (-0.9%) to 96.628% when pulling 9a8f278 on treeskar:master into 89e338f on gotwarlost:master.

[kjackson87]

I'm seeing this error, definitely an annoying output error.

[Dustb0]

Are there any plans to merge this soon? :( This bug is really annoying

[johanneswilm]

@gotwarlost ping